fs: dlm: move connect callback in node creation

This patch moves the assignment for the connect callback to the node
creation instead of assign some dummy functionality. The assignment
which connect functionality will be used will be detected according to
the configfs setting.
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>

fs/dlm/lowcomms.c

@@ -142,6 +142,8 @@ DEFINE_STATIC_SRCU(connections_srcu);
 static void process_recv_sockets(struct work_struct *work);
 static void process_send_sockets(struct work_struct *work);
 
+static void sctp_connect_to_sock(struct connection *con);
+static void tcp_connect_to_sock(struct connection *con);
 
 /* This is deliberately very simple because most clusters have simple
    sequential nodeids, so we should be able to go straight to a connection
@@ -185,14 +187,10 @@ static int dlm_con_init(struct connection *con, int nodeid)
 	INIT_WORK(&con->rwork, process_recv_sockets);
 	init_waitqueue_head(&con->shutdown_wait);
 
-	/* Setup action pointers for child sockets */
-	if (con->nodeid) {
-		struct connection *zerocon = __find_con(0);
-
-		con->connect_action = zerocon->connect_action;
-		if (!con->rx_action)
-			con->rx_action = zerocon->rx_action;
-	}
+	if (dlm_config.ci_protocol == 0)
+		con->connect_action = tcp_connect_to_sock;
+	else
+		con->connect_action = sctp_connect_to_sock;
 
 	return 0;
 }
@@ -1006,7 +1004,6 @@ static void sctp_connect_to_sock(struct connection *con)
 	sock_set_mark(sock->sk, mark);
 
 	con->rx_action = receive_from_sock;
-	con->connect_action = sctp_connect_to_sock;
 	add_sock(sock, con);
 
 	/* Bind to all addresses. */
@@ -1104,7 +1101,6 @@ static void tcp_connect_to_sock(struct connection *con)
 	}
 
 	con->rx_action = receive_from_sock;
-	con->connect_action = tcp_connect_to_sock;
 	con->shutdown_action = dlm_tcp_shutdown;
 	add_sock(sock, con);
 
@@ -1192,7 +1188,6 @@ static struct socket *tcp_create_listen_sock(struct connection *con,
 	sock->sk->sk_user_data = con;
 	save_listen_callbacks(sock);
 	con->rx_action = accept_from_sock;
-	con->connect_action = tcp_connect_to_sock;
 	write_unlock_bh(&sock->sk->sk_callback_lock);
 
 	/* Bind to our port */
@@ -1275,7 +1270,6 @@ static int sctp_listen_for_all(void)
 	con->sock = sock;
 	con->sock->sk->sk_data_ready = lowcomms_data_ready;
 	con->rx_action = accept_from_sock;
-	con->connect_action = sctp_connect_to_sock;
 
 	write_unlock_bh(&sock->sk->sk_callback_lock);